What happened when Young Italy set up a republic in Rome

Young Italy, movement founded by Giuseppe Mazzini in 1831 to work for a united, ... Humanity to be free and equal brothers, and only a republic could assure this

Explanation:

The movement's goal was to create a united Italian republic through promoting a general insurrection in the Italian reactionary states and in the lands occupied by the Austrian Empire. Mazzini's belief was that a popular uprising would create a unified Italy.                                                                          

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option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: